Manifold for internal combustion engines



May 30, 1933. R. SUCZEK 1,912,047

MANIFOLD FOR INTERNAL COMBUSTION ENGINES Original Filed March 18, 1929 Mahl- INVENTOR.

Patented May 30, 1933 UNITED STATES ROBERT SUCZEK, OF DETROIT, -MICHIGAN MANIFOLD FOR INTERNAL: COMBUSTION ENGINES.

Application filed March 18, 1929, Serial 110,347,822. Renewed October 22,1931

My invention relates to an improved intake manifold for internal combustion engines.

An object of the invention is to provide an intake manifold that will distribute the air with the fuel equally to all cylinders, that will help vaporization and atomization of the fuel and will reduce the amount of liquid fuel entering the cylinders to a minimum or even to zero.

My improved intake manifold is adapted to be employed for multi-cylinder engines with any number of cylinders or even for single cylinder engines.

In the drawing:

Fig. 1 is a view of a 6 cylinder engine with an intake manifold embodying my invention.

Fig. 2 shows my new intake manifold for a 4 cylinder engine.

Fig. 3 is a sectional view of the portion of 29 my intake manifold embodying my invention.

Fig. 4 is a sectional view of Fig. 3 with two branch lines.

Fig. 5 is a modification of the sectional view of Fig. 3 with four branch lines.

One of the meritorious features of my invention is to give the gases flowing through the manifold a certain rotating motion without using any rotating elements or moving parts.

My invention in its simplest form consists in the application of a spiral housing between the carbureter and the engine or the intake opening, as a part of the feeding pipe line.

In Fig. 1 a carburetor is indicated at O from which air and fuel are sucked into the pipe lines P1, P2, P3.

The equal distribution of the mixture into these three pipe lines or branches can be accomplished by any known means by properly dimensioning the openings of the individual lines.

In order to subdivide the mixture flowing through line P1 or P2 into two equal parts I give the mixture within the fitting W1 and W2 a whirling motion. The mixture thus, due to centrifugal force after it leaves the neck N1 and N2 (as will be explained later) will not only enter the branch lines B1 and B2 under absolutely the same condition and under the same angle but will also atomize any liquid fuel that'may be accumulated in the fitting W1 or W2.

In Figures 3 and 4 R is an inlet through which the mixture enters into the fitting W, which consists of a spiral housingv H, having on the side a nozzle-like outlet orifice F with or without a throat or neck N, communicating with thebranch pipes B1 and B2.

f Once the mixture has entered the spiral housing or vortex chamberjI-I it must follow the walls thereof receiving and performing a whirling motion until it enters the nozzle outlet "F andthe neck N which portions form a Venturi through which the mixture passes into the branches. Due to this rotating motion the branch lines B1 and B2 will receive equal amounts of volume. As in a centrifugal pump with two outlets, these outlets would receive equal volumes if they were equal in size, (area). The mixture travels through the neck N in a spiral in which the tangential component is pretty large. This component will create centrifugal force causing the mixture to be distributed equally around the periphery. Obviously the branch lines B1 and B2 of Figures 3 and 4 must receive equal volumes of the mixture. Due to the centrifugal force created within the convergent divergent nozzle or Venturi F the liquid fuel that may have been carried with the air will be atomized and evaporated. This evaporation will be supported by the friction created by the rotation and by the fact that the molecules or drops have to travel a long way on the wall of the nozzle F. 85

Fig. '5 shows a spiral housing W which works exactly like that shown in Fig. 4, but there are four branch pipes B1, B2, B3, B4 communicating with the funnel F and the spiral housing H and W. Such branch pipes" may be connected either to individual cylinders or to groups of cylinders.

here the intake gases of an engine are supposed to be heated on the so called hot spot by the exchange of heat from the ex haust gases, my invention offers a very compact and effective arrangement, by leading the exhaust gases around the neck N and funnel F, where the whirl velocity is the highest. .10

I claim: V 1. An intake manifold for multi-cylinder internal combustion engines, means to subject a fluid mixture while flowing through said manifold to rotating motion, means to conduct the rotating mixture into a convergent divergent passage whose axis is about perpendicular to the whirling motion, and

means to thereafter divide the mixture into streams and direct the same towards and into the cylinders of the engine.

2. An intake manifold for internal combustion engines for conducting explosive mixture from'a carbureter into the cylinders of the engine comprising a vortex chamber and a Venturi tube through, which the mixture passes in a whirl and means for distributing the mixture into branches after it has passed the convergent-divergent portion of the Venturi.

3. An intake manifold for multi-cylinder internal combustion engines comprising a plurality of vortex chambers with Venturi tubes, and means to deliver explosive mixture from each Venturi tube to an equal number of cylinders of the engine.

ROBERT SUCZEK. 

